Tascam AV-452 Specifications

SERIAL IMPLEMENTATION OVERVIEW
TASCAM's AV-452 has a serial port capable of
operating in standard RS-232, RS-422 or RS-485
protocols which offers access to most switches and
indicator status on the AV-452. The AV-452 saves
resources on recursive scanning with a "query all"
command and by generating status replies on status
changes. An additional RS-232 command allows IR
strings to be learned for projector control, outlined
separately in: AV-452_IR_PRG.pdf.
• Channel Mute or Dim Command & Status
• Complete AV Routing Command & Status
• Amp A and B In/Out Command & Status
• Intercom and Cascade Command & Status
• Room Volume Up/Down Commands
• "Query All Status" Macro Command
SERIAL ROTARY DIAL SETTING AND CABLE PIN-OUT
Settings and Voltages
Note: The rotary control and most dip switches are only
scanned at power-up. You will need to turn the AV-452 off
and back on for any changes to take effect.
Under the security panel, there is a rotary dial that
determines the machine ID (address). This allows multiple
AV-452 machines to be connected to a single serial line and
still be addressed individually. If you are not using multiple
machines, this should probably be set to "1".
The RS-422 and RS-485 operation follows normal
specifications. However, RS-232 operation is a modification
of the RS-422 port. It operates at 0-4.5V, rather than ±9V.
This will operate normally with most equipment, such as old
control systems or PC computers. If you have trouble with
RS-232, try switching to RS-422 if you can to see if that
solves the problem.
Cable Pin-Out, and Control System Settings
Connector shown from perspective of the rear panel female
connector. The male connector for your cable will be the
mirror image of this diagram.
Connector: Female DB9
Port Speed: 9600 bps
Command Spacing: >25msec
Character Length: 8 bit
Parity: None
7733 Telegraph Road
All features and specifications are subject to change without notice. Contact your local TASCAM representative for the latest information.
5 4 3 2 1
9 8 7 6
• Montebello, CA 90640 • (323) 726-0303
Serial Control Specification
• Dip Switch Setting and EMG Circuit Status
• Uses RS-232, RS-422, or RS-485 Protocol
• Assignable Address for RS-485
• Generates Status Commands on State Changes
• Command to Program Outbound IR Strings
(For this feature, see AV-452_IR_PRG.pdf)
REAR PANEL MACHINE ID
ROTARY ENCODER
DVD VCR MONITOR CASCADE INPUT
POWER RGB2 THRU IN IN OUT OUT
R
EMG
SPEAKER
OUTPUT
IN
EMG IN GND
B A
SERIAL CUSTOMIZE
ADDRESS
100W/ch @ 8Ω
SW FUNCTION UP DN SW FUNCTION
160W/ch @ 4Ω 1 LEARN IR ON OFF 4 MIC HPF
2 CASCADE EXC SUM 5 INT GATE
3 SPK OUT ST 6 AV DUCK
MON
RS-232:
Pin 2: Rx-Data
Pin 3: Tx- Data
Pin 5: Ground
RS-422:
Pin 2: Rx-Data
Pin 3: Tx- Data
Pin 5: Ground
Pin 6: Rx+ Data
Pin 7: Tx+ Data
RS-485:
Pin 2: TxRx-Data
Pin 3: TxRx-Data
Pin 5: Ground
Pin 6: TxRx+ Data
Pin 7: TxRx+ Data
• http://www.tascamcontractor.com
AV-452
SERIAL
ADDRESS
5
6
4
7
3
8
2
9
1
LINE OUTPUT MEETING DVD 0 VCR CD-RW CASSETTE
L R L OUT IN IN OUT IN OUT IN OUT
L L
R R
INTERCOM MIC4 MIC3 MIC2 MIC1
CV IN
GATE
(-) 12V 24V 70V
LEVEL PHANTOM
THRESH
POWER
OFF ON
MIC4 MIC3 MIC2 MIC1
AV DUCKER LINE MIC GRP GND - + GND - + GND - + GND - +
RATIO THRESH OUTPUT INSERT
ST MONO
UP DN
ON OFF
ON OFF
ON OFF CONTROL
Tx-
GND Rx-
Tx-
GND Rx-
Tx+
Rx+
TxRx-
GND
TxRx+
Page 1 of 8
AV-452_RS-232_spec.pdf
RS-232
RELAY
031104